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The AI company Perplexity is complaining their bots can't bypass Cloudflare's firewall
(www.searchenginejournal.com)
This is a most excellent place for technology news and articles.
If they acted differently, they'd probably be liable for illegal activity that they proxy for (this is for example relevant for the DMCA safe harbor).
Anyhow, when on their abuse page, I have an option for "Registrar", which is used for "DNS abuse", among others.